.header{
    height: 0;
}
.container{
    width: 100%;
    height: 120vh;
    max-height: 1280px;
    background: url(../images/world.jpg) no-repeat center;
    background-size: 100% 100%;
    padding-top: 150px;
}
.content{
    width: 1200px;
    height: 878px;
    margin: 0 auto;
}
.tittle{
    display: inline-block;
    width: 310px;
    height: 56px;
    background: url(../images/tittle.png);
    vertical-align: top;
    line-height: 56px;
    font-size: 20px;
    padding-left: 50px;
}
.content_main{
    display: inline-block;
    width: 756px;
    height: 878px;
    background: url(../images/bookbg.png) no-repeat center;
    padding: 50px 50px 100px 150px;
    overflow: hidden;
}
.content_main h2{
    line-height: 50px;
    margin-bottom: 30px;
    text-align: center;
}
.content_main img{
    width: 500px;
}
.content_main .text p{
    line-height: 40px;
}
.content_main .text p::first-letter{
    margin-left: 32px;
}
.content_main .text{
    padding-right: 30px;
    height: 600px;
    overflow-y: scroll;
}
.content_main .text::-webkit-scrollbar{
    width: 5px;
    height: 100%;
}
.content_main .text::-webkit-scrollbar-track{
    background-color: rgba(155, 155, 155, 0.5);
}
.content_main .text::-webkit-scrollbar-thumb{
    background-color: white;
    border-radius: 5px;
}